Windows Phone 8.1 Universal Apps中不存在BackgroundAudioPlayer

Question

此代码在WP8.0中工作但在进入WP8.1时BackgroundAudioPlayer无法正常工作

 if (BackgroundAudioPlayer.Instance.PlayerState == PlayState.Playing)
 {
     if (BackgroundAudioPlayer.Instance != null &&
         BackgroundAudioPlayer.Instance.Track.Source.ToString().Contains("Claps.mp3"))
     {
         BackgroundAudioPlayer.Instance.Stop();
     }
 }

Answer 1

你的Windows Phone 8.0 Silverlight代码在Windows Phone 8.1 XAML中不起作用，因为API不同，没有BackgroundAudioPlayer.Instance，有BackgroundMediaPlayer.Current和更多的区别，看看https://msdn.microsoft.com/en-us/library/windows/apps/xaml/dn642090.aspx